Canine CellMates is hosting a Halloween party on The event will benefit Canine CellMates' Fulton County jail dogs program. The Halloween party will feature hors d'oeuvres, drinks, a costume contest with prizes, and Richard Siegel on the piano. The $25 cover charge covers two drinks and hors d'oeuvres. Attendees can R.S.V.P. at at the Ann Jackson Gallery in Roswell. CanineCellMates.org.